CRISMO@HLERUL2.BITNET (Maarten Ouwehand +31 71 276948/27692) (01/06/89)
Hi all, A simple ? question : Is it possible to work with a 2400 baud modem on a //c ?? Maarten Ouwehand
dcw@athena.mit.edu (David C. Whitney) (01/07/89)
In article <8901060418.aa13812@SMOKE.BRL.MIL> CRISMO@HLERUL2.BITNET (Maarten Ouwehand +31 71 276948/27692) writes: >A simple ? question : >Is it possible to work with a 2400 baud modem on a //c ?? > >Maarten Ouwehand It ought to be. Any modem program that uses interrupts to receive characters (like Z-Link) should be able to work at speeds up to 9600 baud. Any program which doesn't use interrupts (such as Kermit) would have to poll the serial port at a pretty high rate. Dave Whitney Third year undergraduate student in Computer Science at MIT dcw@athena.mit.edu ...!bloom-beacon!athena.mit.edu!dcw dcw@goldilocks.mit.edu I wrote Z-Link. Send me bug reports. I use a //GS. Send me Tech Info. "This is MIT. Collect and 3rd party calls will not be accepted at this number."
SEWALL@UCONNVM.BITNET (Murph Sewall) (01/07/89)
>(like Z-Link) should be able to work at speeds up to 9600 baud. Any program >which doesn't use interrupts (such as Kermit) would have to poll the serial >port at a pretty high rate. Whoa, Dave. Your parental pride in Z-Link is justified, but you're a little out of touch with what the competition does. Both Ted Medin's Kermit-65 and Dick Atlee's Kermit-A2 do USE interrupts (and work dandy at 9600 baud). Dick's also offers the option of POLLING if it's used with a serial port that doesn't support interrupts, AND it manages quite nicely at 9600 (as has SOFTERM 2 for more than 4 years). The fact that (at 9600 baud) the program must be polling "at a pretty high rate" is irrelevant from the users point of view (more of a problem for the software developer, I suppose). Murph Sewall Sewall@UCONNVM.BITNET Business School sewall%uconnvm.bitnet@mitvma.mit.edu [INTERNET] U of Connecticut {rutgers psuvax1 ucbvax & in Europe - mcvax} !UCONNVM.BITNET!SEWALL [UUCP] -+- My employer isn't responsible for my mistakes AND vice-versa! (subject to change without notice; void where prohibited) According to the American Facsimile Association, more than half the calls from Japan to the U.S. are fax calls. FAX it to me at: 1-203-486-5246
dcw@ATHENA.MIT.EDU ("Dave Whitney Third year undergraduate student in Computer Science at MIT") (01/08/89)
I appear to be in error. I had read that Kermit works on older //'s because it *didn't* depend on ints. I expanded that to it *doesn't* use ints at all. Sorry. Dave Whitney Third year undergraduate student in Computer Science at MIT dcw@athena.mit.edu ...!bloom-beacon!athena.mit.edu!dcw dcw@goldilocks.mit.edu I wrote Z-Link. Send me bug reports. I use a //GS. Send me Tech Info. "This is MIT. Collect and 3rd party calls will not be accepted at this number."
halp@TCGOULD.TN.CORNELL.EDU ("Bruce P. Halpern") (01/09/89)
The //c provides baud rates up to the full RS232c level, 19,600. A 2400 baud modem works just file. ****DISCLAMER: My comments, etc., are my own shakey opinions ******** | Bruce P. Halpern Psychology & Neurobiology & Behavior Cornell Ithaca | | INTERNET:halp@tcgould.tn.cornell.edu BITNET:D57J@CORNELLA D57J@CRNLVAX5| | UUCP:{vax135,rochester,decvax}!cornell!batcomputer!halp | | PHONE: 607-255-6433 Uris Hall, Cornell U., Ithaca, NY 14853-7601 |